“…On the one hand, fWHR is perceived in a negative manner, as studies show that observers interpret fWHR as a signal of untrustworthiness, and down-regulate their level of cooperation accordingly (Haselhuhn, Wong, & Ormiston, 2013;Stirrat & Perrett, 2010). On the other hand, social interaction with men with higher fWHRs may also have positive aspects, as studies show that wider faced men were preferred group members during intergroup competition (Hehman, Leitner, Deegan, & Gaertner, 2015). Men with wider faces are also preferred dating partners, as are dominant men in general, albeit only for short-term relationships (Valentine, Li, Penke, & Perrett, 2014), and have higher lifetime reproductive success (Loehr & O'Hara, 2013); thus, the fWHR may be important for female mate choice.…”